PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-18:57:50
G01     82.7           32.6               11.9 +/-    0.70      19.8 +/-    0.70  0.040 / 0.050
G07     130.7          34.0               14.2 +/-    0.64      22.9 +/-    0.64  0.040 / 0.050
G11     61.2           36.8               12.4 +/-    1.07      19.1 +/-    1.07  0.040 / 0.060
G13     287.0          38.2               15.1 +/-    1.35      22.6 +/-    1.35  0.040 / 0.090
G15     310.5          12.8               10.4 +/-    2.02      27.2 +/-    2.02  0.040 / 0.030
G17     218.3          59.4               14.0 +/-    1.10      16.0 +/-    1.10  0.030 / 0.030
G18     56.3           21.4               11.5 +/-    3.42      24.5 +/-    3.42  0.160 / 0.190
G19     216.7          32.8               14.4 +/-    1.52      23.7 +/-    1.52  0.190 / 0.200
G28     350.0          61.6               11.7 +/-    0.46      13.1 +/-    0.46  0.060 / 0.100
G30     121.5          69.2               12.9 +/-    0.53      13.7 +/-    0.53  0.060 / 0.090