PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/01-20:12:50
G02     200.1          19.3               13.2 +/-    2.80      29.6 +/-    2.80  0.140 / 0.140
G06     170.1          53.2               12.1 +/-    1.23      14.7 +/-    1.23  0.100 / 0.130
G13     228.4          14.1               14.6 +/-    6.07      37.2 +/-    6.07  0.030 / 0.050
G17     16.2           62.8               11.7 +/-    0.44      12.9 +/-    0.44  0.030 / 0.040
G19     311.4          70.7               10.7 +/-    0.86      11.3 +/-    0.86  0.040 / 0.090
G24     310.7          28.9                9.8 +/-    1.20      17.5 +/-    1.20  0.040 / 0.070
G28     86.4           40.5               11.2 +/-    0.84      16.2 +/-    0.84  0.140 / 0.400
G30     156.9          15.7               13.7 +/-    1.50      33.4 +/-    1.50  0.140 / 0.240