PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-14:43:00
G01     62.6           30.9                8.8 +/-    0.79      15.2 +/-    0.79  0.090 / 0.130
G07     140.2          21.7               10.4 +/-    1.42      21.9 +/-    1.42  0.100 / 0.120
G11     49.5           26.7                6.2 +/-    2.21      11.6 +/-    2.21  0.060 / 0.050
G13     265.2          37.2               10.2 +/-    1.52      15.5 +/-    1.52  0.060 / 0.070
G15     296.7          16.2                7.9 +/-    1.67      19.0 +/-    1.67  0.070 / 0.120
G17     242.7          71.4               10.5 +/-    0.50      11.1 +/-    0.50  0.070 / 0.130
G18     43.5           14.2                6.0 +/-    3.36      15.2 +/-    3.36  0.030 / 0.030
G19     228.6          49.2               11.6 +/-    2.64      14.8 +/-    2.64  0.040 / 0.030
G28     19.2           60.1                9.2 +/-    1.08      10.4 +/-    1.08  0.070 / 0.110
G30     141.3          54.3               10.3 +/-    0.69      12.3 +/-    0.69  0.090 / 0.140