PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-16:58:10
G01     56.2           29.0                7.8 +/-    1.25      13.9 +/-    1.25  0.080 / 0.200
G07     143.9          18.9               11.4 +/-    1.36      25.8 +/-    1.36  0.070 / 0.270
G11     46.6           20.5                7.6 +/-    1.40      16.5 +/-    1.40  0.040 / 0.080
G13     257.8          33.7               10.9 +/-    1.47      17.7 +/-    1.47  0.040 / 0.060
G15     292.0          15.6                9.6 +/-    4.94      23.5 +/-    4.94  0.060 / 0.110
G17     273.7          77.6               12.2 +/-    1.09      12.5 +/-    1.09  0.060 / 0.110
G18     40.0           10.3                7.0 +/-    4.30      19.5 +/-    4.30  0.080 / 0.280
G19     236.3          51.6               13.0 +/-    1.40      16.1 +/-    1.40  0.080 / 0.220
G28     42.0           55.4               10.8 +/-    0.45      12.8 +/-    0.45  0.030 / 0.070
G30     146.3          48.8               12.7 +/-    0.98      16.3 +/-    0.98  0.040 / 0.060