PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-15:27:50
G01     102.4          27.8                9.9 +/-    1.30      18.2 +/-    1.30  0.080 / 0.150
G07     113.4          54.9               10.5 +/-    0.62      12.5 +/-    0.62  0.090 / 0.140
G08     41.7           16.6                8.5 +/-    2.92      20.2 +/-    2.92  0.020 / 0.020
G11     82.4           42.6               11.2 +/-    1.35      15.6 +/-    1.35  0.030 / 0.020
G13     305.7          31.4               10.2 +/-    0.98      17.4 +/-    0.98  0.040 / 0.050
G17     208.1          41.7               11.6 +/-    1.02      16.5 +/-    1.02  0.020 / 0.040
G18     75.3           24.7               10.7 +/-    2.00      21.1 +/-    2.00  0.050 / 0.080
G19     210.8          14.9                8.0 +/-   16.28      20.0 +/-   16.28  0.050 / 0.060
G28     327.0          61.6                9.1 +/-    0.39      10.2 +/-    0.39  0.140 / 0.280
G30     45.1           79.8               10.8 +/-    0.36      10.9 +/-    0.36  0.180 / 0.200