PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-23:27:50
G02     85.2           14.0                9.9 +/-    2.07      25.3 +/-    2.07  0.110 / 0.180
G05     44.9           32.9                8.3 +/-    1.07      13.8 +/-    1.07  0.110 / 0.200
G13     96.6           35.0               11.7 +/-    0.73      18.6 +/-    0.73  0.020 / 0.030
G15     144.7          39.7               15.0 +/-    0.94      22.0 +/-    0.94  0.030 / 0.030
G18     233.3          28.8               15.5 +/-    2.14      27.7 +/-    2.14  0.070 / 0.100
G20     10.8           79.8               10.6 +/-    0.91      10.7 +/-    0.91  0.090 / 0.090
G21     299.2          37.7               11.1 +/-    0.98      16.8 +/-    0.98  0.080 / 0.220
G25     202.9          20.2               14.0 +/-    2.00      30.7 +/-    2.00  0.080 / 0.200
G26     303.9          18.5                9.0 +/-    1.22      20.5 +/-    1.22  0.050 / 0.080
G29     109.3          86.0               11.3 +/-    0.94      11.4 +/-    0.94  0.050 / 0.090