PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-19:28:10
G03     215.4          61.0                9.3 +/-    0.67      10.5 +/-    0.67  0.040 / 0.050
G07     255.3          16.3                9.1 +/-    1.33      22.0 +/-    1.33  0.040 / 0.040
G09     308.6          25.6                7.9 +/-    2.01      15.3 +/-    2.01  0.040 / 0.060
G16     113.7          64.0               10.5 +/-    0.52      11.5 +/-    0.52  0.040 / 0.070
G22     189.2          44.5               10.0 +/-    1.79      13.5 +/-    1.79  0.060 / 0.270
G23     325.1          55.2                9.7 +/-    0.78      11.6 +/-    0.78  0.080 / 0.260
G26     61.5           50.4                9.3 +/-    0.70      11.6 +/-    0.70  0.040 / 0.070
G31     56.2           16.2                6.5 +/-    1.85      15.6 +/-    1.85  0.040 / 0.070