PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-13:42:50
G01     61.8           31.1                7.0 +/-    0.86      11.9 +/-    0.86  0.040 / 0.040
G07     141.5          23.6                7.6 +/-    3.61      15.4 +/-    3.61  0.040 / 0.040
G11     48.5           23.9                6.9 +/-    2.30      13.9 +/-    2.30  0.100 / 0.180
G13     264.1          35.9                8.5 +/-    1.54      13.3 +/-    1.54  0.080 / 0.120
G15     298.6          14.8                3.0 +/-    1.08       7.5 +/-    1.08  0.080 / 0.140
G17     256.2          76.7                9.5 +/-    0.42       9.7 +/-    0.42  0.080 / 0.110
G18     43.0           13.4                5.6 +/-    2.03      14.6 +/-    2.03  0.070 / 0.070
G19     230.3          45.6                9.1 +/-    2.02      12.2 +/-    2.02  0.060 / 0.090
G28     32.7           57.3                8.0 +/-    0.59       9.4 +/-    0.59  0.160 / 0.290
G30     142.9          55.6                9.1 +/-    0.84      10.7 +/-    0.84  0.070 / 0.170