PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/06-00:43:00
G02     203.0          37.4               14.2 +/-    0.93      21.6 +/-    0.93  0.040 / 0.030
G06     158.6          70.3               13.1 +/-    0.47      13.8 +/-    0.47  0.050 / 0.030
G12     308.2          15.7                7.6 +/-    2.04      18.6 +/-    2.04  0.160 / 0.220
G17     33.2           51.6               10.4 +/-    1.15      12.8 +/-    1.15  0.090 / 0.260
G19     2.7            64.7               10.0 +/-    0.44      11.0 +/-    0.44  0.130 / 0.100
G24     296.9          38.5                9.1 +/-    1.44      13.6 +/-    1.44  0.110 / 0.110
G28     104.0          30.0               12.4 +/-    0.75      21.7 +/-    0.75  0.030 / 0.050