PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-23:27:40
G02     267.4          80.5               11.6 +/-    0.54      11.7 +/-    0.54  0.060 / 0.090
G05     168.6          22.2               16.7 +/-    1.67      34.8 +/-    1.67  0.050 / 0.100
G06     40.1           51.7               10.5 +/-    0.58      13.0 +/-    0.58  0.040 / 0.030
G12     321.1          58.7               11.1 +/-    0.56      12.8 +/-    0.56  0.040 / 0.040
G17     74.5           21.4               11.2 +/-    1.69      23.9 +/-    1.69  0.090 / 0.140
G19     61.9           36.3               11.3 +/-    0.69      17.5 +/-    0.69  0.100 / 0.150
G24     239.0          31.2               16.6 +/-    1.24      28.3 +/-    1.24  0.040 / 0.050
G25     317.5          16.7                9.7 +/-    3.26      23.2 +/-    3.26  0.040 / 0.040