PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-03:58:00
G02     201.6          33.4                7.3 +/-    1.17      12.0 +/-    1.17  0.060 / 0.130
G06     168.2          64.1                5.2 +/-    0.38       5.7 +/-    0.38  0.070 / 0.110
G12     305.6          11.7                0.2 +/-   11.96       0.6 +/-   11.96  0.030 / 0.040
G17     31.7           52.7                3.5 +/-    1.00       4.3 +/-    1.00  0.040 / 0.040
G19     355.5          66.8                2.7 +/-    0.40       2.9 +/-    0.40  0.180 / 0.210
G24     301.9          35.9                3.1 +/-    1.59       4.8 +/-    1.59  0.180 / 0.240
G28     100.0          32.6                3.6 +/-    0.98       5.9 +/-    0.98  0.060 / 0.090