PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-12:13:10
G01     74.3           32.5                0.5 +/-   22.55       0.8 +/-   22.55  0.150 / 0.280
G07     134.6          32.0                1.8 +/-   24.50       3.0 +/-   24.50  0.080 / 0.350
G11     56.6           34.6                1.0 +/-    2.12       1.5 +/-    2.12  0.040 / 0.060
G13     278.4          38.9                0.9 +/-   25.02       1.3 +/-   25.02  0.050 / 0.070
G15     306.4          13.9                0.6 +/-    3.29       1.7 +/-    3.29  0.060 / 0.120
G17     224.9          61.4                4.5 +/-    1.35       5.1 +/-    1.35  0.060 / 0.120
G18     51.5           19.7                0.0 +/-   26.67       0.0 +/-   26.67  0.050 / 0.090
G19     220.3          40.0                2.5 +/-   24.60       3.6 +/-   24.60  0.060 / 0.360
G28     358.3          61.4                2.5 +/-    1.93       2.8 +/-    1.93  0.060 / 0.110
G30     131.0          66.1               -0.7 +/-   24.11      -0.8 +/-   24.11  0.060 / 0.350