PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-16:58:00
G02     57.9           34.3                8.7 +/-    2.54      14.0 +/-    2.54  0.110 / 0.390
G05     60.6           63.6                8.7 +/-    0.74       9.6 +/-    0.74  0.150 / 0.340
G12     183.6          33.1               11.3 +/-    1.61      18.6 +/-    1.61  0.160 / 0.400
G13     127.1          14.5               13.1 +/-    2.40      33.0 +/-    2.40  0.160 / 0.310
G15     164.4          11.9               13.1 +/-    4.07      35.0 +/-    4.07  0.240 / 0.360
G21     270.9          16.1                8.7 +/-    2.30      21.1 +/-    2.30  0.200 / 0.430
G25     239.0          52.6               11.3 +/-    3.28      13.8 +/-    3.28  0.070 / 0.080
G29     327.9          53.4                9.1 +/-    0.59      11.1 +/-    0.59  0.050 / 0.130