PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/24-19:28:10
G02     226.9          68.8                8.8 +/-    0.78       9.3 +/-    0.78  0.240 / 0.360
G06     44.0           66.2                8.8 +/-    0.36       9.6 +/-    0.36  0.210 / 0.410
G12     320.0          42.6                8.4 +/-    0.39      11.8 +/-    0.39  0.040 / 0.040
G17     63.6           28.0                6.1 +/-    0.65      11.1 +/-    0.65  0.040 / 0.040
G19     50.1           42.2                8.4 +/-    1.03      11.8 +/-    1.03  0.080 / 0.100
G24     253.5          38.3                9.7 +/-    1.55      14.5 +/-    1.55  0.100 / 0.080
G28     127.0          11.6                8.6 +/-    1.90      23.3 +/-    1.90  0.050 / 0.070