PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/22-07:57:40
G01     60.4           30.6                5.6 +/-    0.70       9.7 +/-    0.70  0.030 / 0.050
G06     182.7          11.9                1.5 +/-   22.86       4.0 +/-   22.86  0.030 / 0.050
G07     142.1          21.7                9.9 +/-    1.50      20.9 +/-    1.50  0.060 / 0.130
G11     48.5           23.5                4.5 +/-    1.80       9.0 +/-    1.80  0.060 / 0.130
G13     264.7          35.0                7.9 +/-    2.28      12.5 +/-    2.28  0.130 / 0.170
G15     294.0          16.7                4.6 +/-    0.95      11.1 +/-    0.95  0.120 / 0.200
G17     262.6          77.6                9.1 +/-    0.30       9.3 +/-    0.30  0.020 / 0.020
G19     232.9          52.1                9.4 +/-    2.41      11.6 +/-    2.41  0.040 / 0.020
G28     36.4           56.4                8.3 +/-    0.85       9.8 +/-    0.85  0.200 / 0.370
G30     143.0          51.9               10.9 +/-    0.50      13.4 +/-    0.50  0.180 / 0.500