PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-15:28:00
G07     327.3          55.7               15.7 +/-    0.60      18.6 +/-    0.60  0.040 / 0.040
G08     107.9          51.0               18.0 +/-    0.64      22.4 +/-    0.64  0.040 / 0.050
G09     197.4          77.1               16.8 +/-    0.34      17.2 +/-    0.34  0.040 / 0.040
G11     148.5          10.9               12.6 +/-   21.44      34.5 +/-   21.44  0.040 / 0.050
G23     153.0          41.5               17.1 +/-    1.39      24.3 +/-    1.39  0.070 / 0.100
G27     58.3           33.2               14.4 +/-    1.10      23.7 +/-    1.10  0.090 / 0.100
G28     234.7          26.9               18.0 +/-    1.47      33.8 +/-    1.47  0.060 / 0.060
G30     299.5          33.2               14.2 +/-    1.88      23.4 +/-    1.88  0.060 / 0.070