PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-15:27:50
G01     84.3           32.5                8.9 +/-    1.37      14.9 +/-    1.37  0.020 / 0.020
G07     129.6          37.8               11.9 +/-    1.11      18.0 +/-    1.11  0.090 / 0.060
G11     61.9           34.8               10.9 +/-    1.22      17.3 +/-    1.22  0.040 / 0.060
G13     291.1          36.1               12.2 +/-    1.71      18.9 +/-    1.71  0.230 / 0.160
G17     218.2          60.9               11.3 +/-    1.16      12.8 +/-    1.16  0.060 / 0.100
G19     216.8          33.3               13.5 +/-    1.79      22.1 +/-    1.79  0.180 / 0.130
G28     358.2          61.2                8.7 +/-    1.26       9.8 +/-    1.26  0.050 / 0.090
G30     112.5          74.9                9.8 +/-    0.88      10.2 +/-    0.88  0.200 / 0.200