PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-19:12:30
G02     217.4          60.1               11.1 +/-    1.59      12.6 +/-    1.59  0.040 / 0.090
G06     53.5           71.7               10.5 +/-    0.71      11.0 +/-    0.71  0.040 / 0.090
G12     319.8          40.0                9.0 +/-    1.04      13.1 +/-    1.04  0.130 / 0.510
G17     58.1           32.0                8.3 +/-    0.75      14.0 +/-    0.75  0.090 / 0.460
G19     37.7           50.4                8.5 +/-    0.61      10.6 +/-    0.61  0.080 / 0.090
G24     262.3          41.5               12.0 +/-    1.72      17.1 +/-    1.72  0.070 / 0.100
G28     123.4          12.8               10.8 +/-    1.72      28.4 +/-    1.72  0.040 / 0.060