PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-14:27:50
G01     113.9          21.2               11.0 +/-    1.05      23.5 +/-    1.05  0.080 / 0.230
G07     96.7           60.0               10.0 +/-    0.50      11.3 +/-    0.50  0.060 / 0.180
G08     42.9           25.0                6.9 +/-    1.31      13.4 +/-    1.31  0.050 / 0.030
G09     175.0          19.4               10.5 +/-    1.53      23.4 +/-    1.53  0.040 / 0.040
G11     96.2           39.8               10.0 +/-    0.57      14.6 +/-    0.57  0.090 / 0.160
G13     315.9          21.8                4.0 +/-    1.01       8.4 +/-    1.01  0.090 / 0.160
G17     202.5          32.5               11.2 +/-    1.76      18.6 +/-    1.76  0.040 / 0.050
G28     303.2          59.0                7.5 +/-    0.80       8.6 +/-    0.80  0.040 / 0.040
G30     351.7          71.1                7.3 +/-    1.00       7.6 +/-    1.00  0.070 / 0.120