PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-18:42:50
G01     69.7           32.9               12.2 +/-    0.76      20.1 +/-    0.76  0.090 / 0.310
G07     138.0          30.5               14.1 +/-    1.11      24.5 +/-    1.11  0.080 / 0.320
G11     53.4           30.6               11.4 +/-    0.68      19.7 +/-    0.68  0.080 / 0.140
G13     273.3          37.4               14.6 +/-    1.13      22.1 +/-    1.13  0.070 / 0.130
G15     302.5          15.0                9.7 +/-    2.77      24.0 +/-    2.77  0.040 / 0.050
G17     234.1          67.3               14.6 +/-    0.58      15.7 +/-    0.58  0.030 / 0.050
G18     48.5           17.9                9.9 +/-    1.24      22.9 +/-    1.24  0.060 / 0.130
G19     224.9          41.1               16.1 +/-    1.66      23.1 +/-    1.66  0.060 / 0.140
G28     21.5           59.0               12.3 +/-    0.36      14.1 +/-    0.36  0.040 / 0.050
G30     136.5          60.4               15.9 +/-    1.08      18.0 +/-    1.08  0.040 / 0.050