PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-17:57:50
G02     201.2          24.7               12.1 +/-    1.07      23.8 +/-    1.07  0.080 / 0.110
G06     168.3          58.7               12.1 +/-    1.06      13.9 +/-    1.06  0.080 / 0.120
G13     222.7          10.2               12.2 +/-    2.01      34.0 +/-    2.01  0.040 / 0.090
G17     24.8           57.5                8.9 +/-    0.81      10.3 +/-    0.81  0.040 / 0.100
G19     340.9          69.7                9.3 +/-    0.48       9.8 +/-    0.48  0.090 / 0.200
G24     306.3          32.7                8.9 +/-    1.71      14.7 +/-    1.71  0.120 / 0.200
G28     89.4           41.6               10.2 +/-    0.79      14.5 +/-    0.79  0.040 / 0.040