PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-19:43:00
G07     129.3          35.8               14.1 +/-    1.03      22.1 +/-    1.03  0.040 / 0.060
G11     63.0           37.7               11.3 +/-    0.58      17.1 +/-    0.58  0.040 / 0.060
G13     289.4          37.8               12.0 +/-    1.11      18.1 +/-    1.11  0.040 / 0.080
G15     312.0          12.0                8.6 +/-    2.49      23.0 +/-    2.49  0.040 / 0.080
G17     216.5          57.9               14.9 +/-    0.64      17.2 +/-    0.64  0.040 / 0.040
G18     57.9           21.9                8.8 +/-    1.63      18.6 +/-    1.63  0.030 / 0.030
G19     215.7          30.9               17.0 +/-    1.99      29.2 +/-    1.99  0.080 / 0.120
G28     346.7          61.7               10.4 +/-    0.46      11.6 +/-    0.46  0.070 / 0.140
G30     117.3          71.4               14.4 +/-    0.71      15.1 +/-    0.71  0.090 / 0.260