PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/21-03:28:10
G08     313.1          17.3               10.4 +/-    2.33      24.3 +/-    2.33  0.030 / 0.040
G10     319.1          57.4                8.8 +/-    1.14      10.2 +/-    1.14  0.040 / 0.040
G14     215.2          27.0               12.5 +/-    0.93      23.3 +/-    0.93  0.080 / 0.160
G15     45.9           18.6                7.8 +/-    0.89      17.8 +/-    0.89  0.080 / 0.160
G18     24.3           62.7               11.3 +/-    0.83      12.6 +/-    0.83  0.040 / 0.050
G21     126.7          63.0               11.0 +/-    0.56      12.2 +/-    0.56  0.040 / 0.060
G24     82.6           30.3               10.4 +/-    0.93      18.0 +/-    0.93  0.060 / 0.060
G27     280.8          38.1               10.9 +/-    0.86      16.3 +/-    0.86  0.050 / 0.080
G32     218.8          45.8               13.2 +/-    1.11      17.5 +/-    1.11  0.080 / 0.090