PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-18:42:40
G01     83.5           33.0               12.9 +/-    1.74      21.4 +/-    1.74  0.160 / 0.320
G07     130.3          41.0               13.8 +/-    1.10      19.7 +/-    1.10  0.170 / 0.240
G11     63.2           37.7               12.3 +/-    2.11      18.6 +/-    2.11  0.030 / 0.050
G13     288.0          37.3               16.1 +/-    1.33      24.5 +/-    1.33  0.030 / 0.060
G15     311.8          11.9               12.2 +/-    1.26      32.7 +/-    1.26  0.030 / 0.020
G17     219.7          56.3               15.6 +/-    1.11      18.4 +/-    1.11  0.030 / 0.020
G18     58.5           22.6               11.1 +/-    1.61      22.8 +/-    1.61  0.080 / 0.180
G19     217.6          30.7               15.0 +/-    2.04      26.0 +/-    2.04  0.120 / 0.170
G28     0.5            61.2               11.2 +/-    0.93      12.5 +/-    0.93  0.060 / 0.100
G30     119.9          71.0               14.3 +/-    0.79      15.0 +/-    0.79  0.060 / 0.090