PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-21:12:30
G02     206.0          43.1               14.0 +/-    1.10      19.4 +/-    1.10  0.100 / 0.140
G06     134.8          76.9               12.6 +/-    0.69      12.9 +/-    0.69  0.080 / 0.130
G12     312.1          22.7               11.1 +/-    3.38      23.0 +/-    3.38  0.100 / 0.080
G17     41.2           45.5               11.1 +/-    1.33      14.9 +/-    1.33  0.060 / 0.060
G19     13.0           61.3               11.6 +/-    0.62      13.1 +/-    0.62  0.030 / 0.040
G24     287.8          41.4                8.3 +/-    3.73      11.8 +/-    3.73  0.030 / 0.020
G28     110.0          25.6               11.5 +/-    1.02      22.2 +/-    1.02  0.060 / 0.040