PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/29-07:28:00
G10     255.7          31.7                5.9 +/-    0.68       9.9 +/-    0.68  0.040 / 0.050
G13     48.6           25.8                5.3 +/-    1.67      10.1 +/-    1.67  0.050 / 0.040
G15     73.9           54.9                5.0 +/-    0.48       5.9 +/-    0.48  0.080 / 0.340
G16     295.2          13.6                1.9 +/-    2.10       4.8 +/-    2.10  0.110 / 0.360
G20     278.4          54.6                6.3 +/-    3.31       7.5 +/-    3.31  0.150 / 0.230
G21     347.3          65.8                4.9 +/-    0.95       5.3 +/-    0.95  0.170 / 0.190
G26     266.6          13.0                4.0 +/-    0.77      10.5 +/-    0.77  0.090 / 0.090
G29     162.6          38.3                6.2 +/-    1.03       9.3 +/-    1.03  0.160 / 0.120