PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-23:58:00
G01     110.6          23.7               10.3 +/-    2.42      20.7 +/-    2.42  0.060 / 0.100
G07     100.6          61.1                8.8 +/-    0.98       9.9 +/-    0.98  0.070 / 0.110
G08     42.8           25.7                7.5 +/-    0.51      14.4 +/-    0.51  0.040 / 0.060
G09     176.3          17.8               11.5 +/-    2.92      26.8 +/-    2.92  0.040 / 0.060
G11     98.1           43.0               10.1 +/-    0.62      14.0 +/-    0.62  0.060 / 0.090
G13     312.7          25.6                8.8 +/-    1.85      16.9 +/-    1.85  0.080 / 0.080
G17     205.1          32.5                9.7 +/-    1.49      16.1 +/-    1.49  0.090 / 0.220
G19     208.2          10.0               -1.7 +/-   14.54      -4.7 +/-   14.54  0.110 / 0.180
G28     312.1          60.5                8.7 +/-    1.02       9.8 +/-    1.02  0.030 / 0.040
G30     28.4           76.9                9.4 +/-    0.70       9.6 +/-    0.70  0.040 / 0.040