PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-07:12:40
G01     82.5           33.0                4.1 +/-    1.00       6.8 +/-    1.00  0.030 / 0.050
G07     130.8          39.0                7.7 +/-    0.70      11.4 +/-    0.70  0.030 / 0.040
G11     62.2           36.3                4.9 +/-    1.00       7.6 +/-    1.00  0.050 / 0.060
G13     288.6          36.6                8.1 +/-    1.50      12.4 +/-    1.50  0.060 / 0.060
G15     310.6          12.8                3.5 +/-    1.33       9.2 +/-    1.33  0.070 / 0.040
G17     220.2          61.5                7.8 +/-    1.49       8.8 +/-    1.49  0.060 / 0.040
G19     217.8          34.4                6.5 +/-    1.57      10.5 +/-    1.57  0.180 / 0.180
G28     2.9            60.9                4.3 +/-    0.61       4.8 +/-    0.61  0.260 / 0.400
G30     120.6          70.2                7.3 +/-    0.96       7.7 +/-    0.96  0.060 / 0.080