PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-23:12:30
G02     216.3          61.7               13.1 +/-    1.06      14.6 +/-    1.06  0.070 / 0.100
G06     55.7           73.3               11.7 +/-    0.38      12.2 +/-    0.38  0.040 / 0.080
G12     318.9          37.0               10.3 +/-    1.81      15.8 +/-    1.81  0.040 / 0.050
G17     55.9           34.9                9.7 +/-    0.55      15.4 +/-    0.55  0.050 / 0.050
G19     38.7           49.8               10.3 +/-    0.43      13.0 +/-    0.43  0.110 / 0.370
G24     264.4          41.5               13.9 +/-    1.91      19.7 +/-    1.91  0.150 / 0.430
G28     123.2          12.9               14.1 +/-    1.00      36.9 +/-    1.00  0.060 / 0.100