PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-23:27:50
G02     83.7           15.2                7.7 +/-    1.60      19.1 +/-    1.60  0.030 / 0.030
G05     44.7           34.5                6.5 +/-    0.60      10.5 +/-    0.60  0.030 / 0.020
G13     98.9           34.3               11.3 +/-    1.28      18.1 +/-    1.28  0.090 / 0.210
G15     146.2          38.1               13.5 +/-    1.06      20.3 +/-    1.06  0.080 / 0.190
G18     232.1          27.3               10.9 +/-    2.64      20.2 +/-    2.64  0.100 / 0.160
G20     5.5            81.6                7.7 +/-    0.63       7.8 +/-    0.63  0.100 / 0.200
G21     297.6          36.6               11.3 +/-    1.04      17.4 +/-    1.04  0.060 / 0.110
G25     203.9          21.8               13.0 +/-    1.01      27.3 +/-    1.01  0.060 / 0.120
G26     305.6          18.0                8.8 +/-    1.37      20.3 +/-    1.37  0.050 / 0.080
G29     77.3           86.9                9.4 +/-    0.67       9.4 +/-    0.67  0.040 / 0.090