PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-15:57:40
G02     206.9          40.2               11.5 +/-    1.09      16.6 +/-    1.09  0.050 / 0.110
G06     129.0          77.0                9.7 +/-    0.67       9.9 +/-    0.67  0.050 / 0.100
G12     313.1          25.8                6.8 +/-    2.12      13.0 +/-    2.12  0.070 / 0.150
G17     44.2           42.3                8.3 +/-    1.28      11.7 +/-    1.28  0.100 / 0.140
G19     9.4            62.3                8.2 +/-    0.68       9.2 +/-    0.68  0.030 / 0.030
G24     286.5          42.1                4.6 +/-    1.50       6.4 +/-    1.50  0.020 / 0.020
G28     109.6          26.0                7.9 +/-    1.04      15.0 +/-    1.04  0.030 / 0.040