PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/08-08:28:10
G01     74.2           33.1                7.6 +/-    0.87      12.4 +/-    0.87  0.040 / 0.040
G07     135.6          32.6                9.8 +/-    0.95      16.3 +/-    0.95  0.030 / 0.040
G11     55.9           31.9                5.5 +/-    1.30       9.3 +/-    1.30  0.050 / 0.070
G13     280.2          37.1                7.5 +/-    1.66      11.5 +/-    1.66  0.040 / 0.090
G15     305.2          14.8                3.7 +/-    1.92       9.1 +/-    1.92  0.090 / 0.220
G17     229.3          68.3                9.8 +/-    0.69      10.5 +/-    0.69  0.090 / 0.170
G19     222.2          40.9               10.8 +/-    1.59      15.4 +/-    1.59  0.030 / 0.030
G28     15.5           59.7                6.8 +/-    0.77       7.8 +/-    0.77  0.030 / 0.030
G30     131.3          64.5                9.3 +/-    0.51      10.2 +/-    0.51  0.070 / 0.100