PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/20-01:27:20
G02     200.2          26.4                9.8 +/-    1.82      18.6 +/-    1.82  0.070 / 0.080
G06     170.2          57.7                7.4 +/-    0.54       8.6 +/-    0.54  0.060 / 0.090
G17     22.2           59.1                6.0 +/-    0.60       6.9 +/-    0.60  0.060 / 0.030
G19     335.3          70.0                5.0 +/-    0.48       5.3 +/-    0.48  0.070 / 0.040
G24     307.5          32.0                7.2 +/-    1.22      12.1 +/-    1.22  0.040 / 0.040
G28     92.9           36.9                7.0 +/-    0.69      10.7 +/-    0.69  0.040 / 0.030