PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-19:28:10
G02     214.2          56.4               12.9 +/-    1.13      15.1 +/-    1.13  0.080 / 0.090
G06     62.9           75.1               11.5 +/-    0.36      11.9 +/-    0.36  0.060 / 0.110
G12     318.5          36.1               11.0 +/-    1.47      17.1 +/-    1.47  0.050 / 0.060
G17     54.7           34.7                9.9 +/-    1.96      15.7 +/-    1.96  0.050 / 0.060
G19     33.0           52.8               11.4 +/-    1.09      13.9 +/-    1.09  0.040 / 0.100
G24     267.7          42.3               12.1 +/-    1.69      17.0 +/-    1.69  0.060 / 0.070
G28     120.8          15.7               12.7 +/-    1.69      31.1 +/-    1.69  0.050 / 0.050