PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-20:27:40
G01     38.7           12.1                9.3 +/-    1.54      24.8 +/-    1.54  0.090 / 0.350
G02     199.5          13.6               16.7 +/-    6.02      42.8 +/-    6.02  0.090 / 0.330
G06     172.5          46.3               14.0 +/-    1.26      18.5 +/-    1.26  0.130 / 0.200
G13     233.1          18.2               16.3 +/-    2.59      37.4 +/-    2.59  0.090 / 0.230
G15     266.6          10.1               14.5 +/-    2.56      40.2 +/-    2.56  0.080 / 0.150
G17     5.8            67.7               13.3 +/-    0.72      14.3 +/-    0.72  0.100 / 0.190
G19     291.3          70.0               13.3 +/-    0.43      14.0 +/-    0.43  0.110 / 0.480
G24     314.2          24.2               10.7 +/-    2.44      21.3 +/-    2.44  0.120 / 0.360
G28     79.1           43.8               12.3 +/-    0.83      16.9 +/-    0.83  0.040 / 0.040
G30     155.8          21.4               15.0 +/-    0.61      31.9 +/-    0.61  0.040 / 0.030