PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-03:57:20
G02     38.3           51.0                5.1 +/-    0.92       6.4 +/-    0.92  0.040 / 0.040
G05     127.2          65.4                7.0 +/-    0.49       7.6 +/-    0.49  0.030 / 0.030
G06     55.9           13.4                3.3 +/-    1.92       8.6 +/-    1.92  0.080 / 0.130
G12     196.4          64.1                5.3 +/-    0.56       5.8 +/-    0.56  0.080 / 0.140
G25     292.0          54.9                6.8 +/-    1.44       8.1 +/-    1.44  0.030 / 0.030
G29     310.0          30.8                6.3 +/-    0.75      10.9 +/-    0.75  0.030 / 0.030