PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-14:27:40
G01     110.4          23.4                8.3 +/-    1.90      16.8 +/-    1.90  0.080 / 0.280
G07     102.9          57.5                8.0 +/-    0.77       9.3 +/-    0.77  0.110 / 0.260
G08     42.2           21.8                5.2 +/-    1.03      10.9 +/-    1.03  0.030 / 0.060
G09     174.4          15.8                9.3 +/-    1.44      22.6 +/-    1.44  0.030 / 0.030
G11     91.2           40.3                7.2 +/-    0.80      10.4 +/-    0.80  0.050 / 0.080
G13     313.7          24.5                8.1 +/-    2.41      16.0 +/-    2.41  0.040 / 0.120
G17     203.7          36.4               10.6 +/-    1.98      16.4 +/-    1.98  0.070 / 0.180
G19     207.8          11.1                0.3 +/-   17.90       0.9 +/-   17.90  0.080 / 0.170
G28     310.4          60.0                8.0 +/-    0.74       9.0 +/-    0.74  0.030 / 0.050
G30     0.3            74.1                7.3 +/-    0.88       7.5 +/-    0.88  0.030 / 0.050