PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-16:43:10
G02     203.6          33.2               12.0 +/-    1.13      19.8 +/-    1.13  0.040 / 0.030
G06     158.4          69.0               11.8 +/-    0.46      12.6 +/-    0.46  0.040 / 0.040
G12     306.5          14.0                9.7 +/-    1.90      24.8 +/-    1.90  0.050 / 0.100
G17     32.9           51.5                8.8 +/-    1.57      10.9 +/-    1.57  0.050 / 0.090
G19     4.0            64.7                9.6 +/-    0.70      10.5 +/-    0.70  0.120 / 0.220
G24     298.1          37.6                9.8 +/-    2.78      14.9 +/-    2.78  0.080 / 0.220
G28     99.1           36.4               10.1 +/-    1.12      15.7 +/-    1.12  0.030 / 0.040