PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/30-17:27:40
G01     77.9           32.8                8.5 +/-    0.68      14.0 +/-    0.68  0.040 / 0.060
G07     133.2          31.5               10.9 +/-    1.02      18.5 +/-    1.02  0.040 / 0.060
G11     57.9           34.8                8.6 +/-    0.75      13.6 +/-    0.75  0.040 / 0.110
G13     281.9          38.7                9.8 +/-    1.21      14.5 +/-    1.21  0.040 / 0.120
G15     307.4          14.0                7.3 +/-    2.26      18.6 +/-    2.26  0.090 / 0.090
G17     222.4          62.2               11.2 +/-    1.13      12.4 +/-    1.13  0.070 / 0.100
G18     53.1           20.3                8.0 +/-    1.35      17.6 +/-    1.35  0.070 / 0.120
G19     218.9          36.8               11.7 +/-    1.17      17.9 +/-    1.17  0.070 / 0.100
G28     356.7          61.5                9.8 +/-    0.62      11.0 +/-    0.62  0.080 / 0.310
G30     128.1          64.6               11.1 +/-    0.36      12.1 +/-    0.36  0.090 / 0.280