PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/14-19:58:00
G07     306.6          46.1               19.9 +/-    1.56      26.4 +/-    1.56  0.140 / 0.150
G08     132.1          40.0               22.5 +/-    0.86      32.7 +/-    0.86  0.120 / 0.170
G09     304.0          77.7               18.6 +/-    0.42      19.0 +/-    0.42  0.050 / 0.070
G16     42.0           24.0               16.1 +/-    1.64      32.3 +/-    1.64  0.050 / 0.080
G23     143.6          60.7               21.7 +/-    0.36      24.5 +/-    0.36  0.080 / 0.310
G27     78.1           37.0               19.1 +/-    0.92      29.3 +/-    0.92  0.150 / 0.560
G28     224.3          13.3               22.2 +/-    1.31      57.5 +/-    1.31  0.050 / 0.070
G30     287.3          24.8               18.9 +/-    1.25      37.0 +/-    1.25  0.050 / 0.080