PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-00:43:10
G05     49.4           17.3                7.4 +/-    1.29      17.4 +/-    1.29  0.150 / 0.520
G10     238.0          13.5               15.1 +/-    2.89      38.9 +/-    2.89  0.150 / 0.370
G13     73.6           37.1               10.2 +/-    0.91      15.6 +/-    0.91  0.090 / 0.070
G15     124.7          53.4               12.2 +/-    0.63      14.8 +/-    0.63  0.060 / 0.080
G16     312.8          12.5                8.8 +/-    3.11      23.3 +/-    3.11  0.030 / 0.040
G18     247.6          42.8               14.4 +/-    0.77      20.0 +/-    0.77  0.030 / 0.050
G20     32.1           62.3               11.0 +/-    1.12      12.3 +/-    1.12  0.110 / 0.240
G21     315.0          48.7                8.8 +/-    1.23      11.2 +/-    1.23  0.120 / 0.250
G26     286.0          19.8                9.8 +/-    1.79      21.6 +/-    1.79  0.070 / 0.140
G29     157.4          67.3               11.7 +/-    0.72      12.6 +/-    0.72  0.080 / 0.160