PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-14:42:30
G01     77.5           33.0                8.4 +/-    1.16      13.8 +/-    1.16  0.150 / 0.200
G07     133.7          33.1               11.7 +/-    0.96      19.3 +/-    0.96  0.130 / 0.170
G11     56.9           31.8                7.8 +/-    1.10      13.1 +/-    1.10  0.030 / 0.020
G13     284.3          36.9               11.3 +/-    1.17      17.4 +/-    1.17  0.030 / 0.030
G15     310.1          12.4                7.2 +/-    1.72      19.1 +/-    1.72  0.070 / 0.070
G17     225.0          66.5               11.2 +/-    0.95      12.1 +/-    0.95  0.070 / 0.080
G19     220.2          38.6               11.5 +/-    1.76      17.2 +/-    1.76  0.080 / 0.100
G28     9.2            60.3                9.5 +/-    0.98      10.7 +/-    0.98  0.080 / 0.110
G30     125.8          69.7               10.2 +/-    0.65      10.8 +/-    0.65  0.070 / 0.100