PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-12:57:30
G07     343.8          61.7                4.8 +/-    0.71       5.4 +/-    0.71  0.200 / 0.300
G08     99.1           52.4                4.8 +/-    0.57       5.8 +/-    0.57  0.150 / 0.260
G09     192.2          73.2                7.1 +/-    0.30       7.4 +/-    0.30  0.190 / 0.760
G11     144.3          15.0                6.1 +/-    3.27      15.2 +/-    3.27  0.200 / 0.610
G23     155.0          37.3                5.7 +/-    0.47       8.7 +/-    0.47  0.030 / 0.030
G27     54.6           31.6                4.4 +/-    1.31       7.4 +/-    1.31  0.050 / 0.040
G28     236.7          25.5                7.3 +/-    2.06      14.0 +/-    2.06  0.120 / 0.070
G30     304.7          38.5                3.6 +/-    1.58       5.4 +/-    1.58  0.090 / 0.080