PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-16:43:00
G01     66.0           32.2                8.8 +/-    0.73      14.7 +/-    0.73  0.050 / 0.130
G07     139.7          27.4               11.9 +/-    1.81      22.0 +/-    1.81  0.050 / 0.140
G11     51.0           27.7                7.3 +/-    1.27      13.5 +/-    1.27  0.040 / 0.060
G13     269.1          36.9                9.9 +/-    0.99      15.2 +/-    0.99  0.040 / 0.050
G15     300.6          15.0                6.1 +/-    1.77      15.3 +/-    1.77  0.050 / 0.080
G17     241.5          71.6               10.3 +/-    0.80      10.8 +/-    0.80  0.060 / 0.080
G18     45.9           16.0                7.6 +/-    1.61      18.6 +/-    1.61  0.060 / 0.110
G19     227.3          43.2               12.1 +/-    1.63      16.7 +/-    1.63  0.060 / 0.130
G28     26.7           58.3                8.1 +/-    0.96       9.3 +/-    0.96  0.070 / 0.160
G30     139.6          58.2               10.0 +/-    0.54      11.6 +/-    0.54  0.080 / 0.150