PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-17:28:00
G01     46.6           22.7                8.8 +/-    2.52      18.1 +/-    2.52  0.080 / 0.180
G06     175.6          30.9               12.7 +/-    2.00      21.8 +/-    2.00  0.130 / 0.200
G11     43.8           11.2                8.5 +/-    3.40      23.1 +/-    3.40  0.050 / 0.060
G13     245.8          27.8               11.4 +/-    1.94      21.0 +/-    1.94  0.050 / 0.070
G15     281.2          14.4                9.6 +/-    1.46      24.2 +/-    1.46  0.220 / 0.270
G17     331.1          76.8               11.5 +/-    0.51      11.8 +/-    0.51  0.140 / 0.210
G19     252.7          61.0               10.9 +/-    0.59      12.3 +/-    0.59  0.020 / 0.020
G24     318.4          12.7               -9.2 +/-   30.87     -24.1 +/-   30.87  0.030 / 0.030
G28     59.2           51.0               10.8 +/-    0.95      13.5 +/-    0.95  0.040 / 0.040
G30     151.8          37.1               12.8 +/-    1.18      19.6 +/-    1.18  0.040 / 0.040